void SourceSample::Load(char *filename) {
#define BUFSIZE 1024 * 1024
SDL_RWops *rwops;
rwops = SDL_RWFromFile(filename, "rb");
Sound_Sample *sample = Sound_NewSample(rwops, NULL,
_system->GetAudioInfo(),
_buffersize );
if(sample == NULL) {
fprintf(stderr, "[error] failed loading sample from '%s': %s\n",
filename, Sound_GetError());
return;
}
Sound_DecodeAll(sample);
_buffersize = sample->buffer_size;
_buffer = new Uint8[_buffersize];
memcpy(_buffer, sample->buffer, _buffersize);
Sound_FreeSample(sample);
// fprintf(stderr, "done decoding sample '%s'\n", filename);
_position = 0;
}
static void start(sstate *data)
{
// data->sample = Sound_NewSampleFromFile("rain.mtm", NULL, 65536);
data->rw = SDL_RWFromConstMem(song, song_size);
data->sample = Sound_NewSample(data->rw, ".mtm", NULL, 65536);
if (data->sample == NULL)
{
fprintf(stderr, "Failed to init sound: %s\n", Sound_GetError());
return;
}
data->devformat.freq = data->sample->actual.rate;
data->devformat.format = data->sample->actual.format;
data->devformat.channels = data->sample->actual.channels;
data->devformat.samples = 4096; /* I just picked a largish number here. */
data->devformat.callback = audio_callback;
data->devformat.userdata = data;
if (SDL_OpenAudio(&data->devformat, NULL) < 0)
{
fprintf(stderr, "Couldn't open audio device: %s.\n", SDL_GetError());
Sound_FreeSample(data->sample);
return;
}
SDL_PauseAudio(0);
data->done_flag = 0;
}
bool tryRead(SDL_RWops &ops, const char *ext)
{
Sound_Sample *sample = Sound_NewSample(&ops, ext, 0, STREAM_BUF_SIZE);
if (!sample)
{
SDL_RWclose(&ops);
return false;
}
/* Do all of the decoding in the handler so we don't have
* to keep the source ops around */
uint32_t decBytes = Sound_DecodeAll(sample);
uint8_t sampleSize = formatSampleSize(sample->actual.format);
uint32_t sampleCount = decBytes / sampleSize;
buffer = new SoundBuffer;
buffer->bytes = sampleSize * sampleCount;
ALenum alFormat = chooseALFormat(sampleSize, sample->actual.channels);
AL::Buffer::uploadData(buffer->alBuffer, alFormat, sample->buffer,
buffer->bytes, sample->actual.rate);
Sound_FreeSample(sample);
return true;
}
void SourceMusic::CleanUp(void) {
_read = 0;
_decoded = 0;
if(_sample != NULL) {
Sound_FreeSample(_sample);
_sample = NULL;
}
}
void Sound_temporary_release_music(void)
{
int i;
if (sound_enabled) {
playing_music=false;
for(i=0;i<3;i++) {
if (music_loaded[i]) Sound_FreeSample(music_sound[i]);
} /* if */
} /* if */
} /* Sound_release_music */
static void end(sstate *data)
{
SDL_PauseAudio(1);
// SDL_Delay(2 * 1000 * data->devformat.samples / data->devformat.freq);
if (data->sample->flags & SOUND_SAMPLEFLAG_ERROR)
fprintf(stderr, "Error decoding file: %s\n", Sound_GetError());
Sound_FreeSample(data->sample);
SDL_CloseAudio();
}
int Sound_Quit(void)
{
ErrMsg *err;
ErrMsg *nexterr = NULL;
size_t i;
BAIL_IF_MACRO(!initialized, ERR_NOT_INITIALIZED, 0);
while (((volatile Sound_Sample *) sample_list) != NULL)
Sound_FreeSample(sample_list);
initialized = 0;
SDL_DestroyMutex(samplelist_mutex);
samplelist_mutex = NULL;
sample_list = NULL;
for (i = 0; decoders[i].funcs != NULL; i++)
{
if (decoders[i].available)
{
decoders[i].funcs->quit();
decoders[i].available = 0;
} /* if */
} /* for */
if (available_decoders != NULL)
free((void *) available_decoders);
available_decoders = NULL;
/* clean up error state for each thread... */
SDL_LockMutex(errorlist_mutex);
for (err = error_msgs; err != NULL; err = nexterr)
{
nexterr = err->next;
free(err);
} /* for */
error_msgs = NULL;
SDL_UnlockMutex(errorlist_mutex);
SDL_DestroyMutex(errorlist_mutex);
errorlist_mutex = NULL;
return(1);
} /* Sound_Quit */
int main(int argc, char *argv[])
{
if (argc != 2) {
fprintf(stderr, "usage: %s <filename>\n", argv[0]);
return 1;
}
if (SDL_Init(SDL_INIT_AUDIO) != 0) {
fprintf(stderr, "Error: %s\n", SDL_GetError());
return 1;
}
if (Sound_Init() == 0) {
fprintf(stderr, "Error: %s\n", Sound_GetError());
return 1;
}
SDL_RWops* rw = SDL_RWFromFile(argv[1], "r");
if (rw == NULL) {
fprintf(stderr, "Error: %s\n", SDL_GetError());
return 1;
}
Sound_AudioInfo wantedFormat;
wantedFormat.channels = 2;
wantedFormat.rate = 44100;
wantedFormat.format = AUDIO_S16LSB;
Sound_Sample* sample = Sound_NewSample(rw, 0, &wantedFormat, 8192);
if (sample == 0) {
fprintf(stderr, "Error: %s\n", Sound_GetError());
return 1;
}
Sound_DecodeAll(sample);
printf("Format: %s\n", sample->decoder->description);
printf("Decoded %d bytes of data.\n", sample->buffer_size);
Sound_FreeSample(sample);
return 0;
}
static void cleanup_channel(schanid_t chan)
{
if (chan->sdl_rwops)
{
if (!chan->decode)
SDL_FreeRW(chan->sdl_rwops);
else
Sound_FreeSample(chan->decode);
chan->sdl_rwops = 0;
chan->decode = 0;
chan->buffered = 0;
}
if (chan->sdl_memory)
{
free(chan->sdl_memory);
chan->sdl_memory = 0;
}
switch (chan->status)
{
case CHANNEL_SOUND:
if (chan->sample)
Mix_FreeChunk(chan->sample);
if (chan->sdl_channel >= 0)
{
Mix_GroupChannel(chan->sdl_channel, FREE);
sound_channels[chan->sdl_channel] = 0;
}
break;
case CHANNEL_MUSIC:
if (chan->music)
{
Mix_FreeMusic(chan->music);
music_channel = 0;
}
break;
}
chan->status = CHANNEL_IDLE;
chan->sdl_channel = -1;
chan->music = 0;
}
/*
** Audio stream callback.
**
** Called by the SDL background thread each time the audio buffer is ready
** to receive more data. The function decodes PCM samples from the sound
** stream and copies them to the buffer for playback. When an end-of-stream
** is reached, closes the audio stream and exits cleanly.
*/
static void
stream_callback (void *userdata, Uint8 *buffer, int length)
{
Sound_Sample *stream = (Sound_Sample *) userdata;
Uint32 bytes_decoded;
/* Decode a chunk of PCM samples from the sound stream. */
Sound_SetBufferSize (stream, length);
bytes_decoded = Sound_Decode (stream);
if (bytes_decoded == 0) {
/* End-of-stream reached; exit cleanly. */
Sound_FreeSample (stream);
Sound_Quit ();
SDL_Quit ();
exit (0);
}
/* Copy the decoded samples to the audio buffer. */
memcpy (buffer, stream->buffer, length);
}
SourceMusic::~SourceMusic() {
// fprintf(stderr, "nebu_SourceMusic destructor called\n");
#ifndef macintosh
SDL_SemWait(_sem);
#else
SDL_LockAudio();
#endif
free(_buffer);
if(_sample) {
Sound_FreeSample( _sample );
_sample = NULL;
}
if(_filename)
free(_filename);
#ifndef macintosh
SDL_SemPost(_sem);
#else
SDL_UnlockAudio();
#endif
}
void closeAudio_platform(AudioInstance* instance)
{
Sound_FreeSample(instance->mAudio.mSample);
instance->mAudio.mSample = NULL;
}
~SDLSoundSource()
{
/* This also closes 'srcOps' */
Sound_FreeSample(sample);
}
static void playOneSoundFile(const char *fname)
{
PlaysoundAudioCallbackData data;
memset(&data, '\0', sizeof (PlaysoundAudioCallbackData));
data.sample = Sound_NewSampleFromFile(fname, NULL, 65536);
if (data.sample == NULL)
{
fprintf(stderr, "Couldn't load '%s': %s.\n", fname, Sound_GetError());
return;
} /* if */
/*
* Open device in format of the the sound to be played.
* We open and close the device for each sound file, so that SDL
* handles the data conversion to hardware format; this is the
* easy way out, but isn't practical for most apps. Usually you'll
* want to pick one format for all the data or one format for the
* audio device and convert the data when needed. This is a more
* complex issue than I can describe in a source code comment, though.
*/
data.devformat.freq = data.sample->actual.rate;
data.devformat.format = data.sample->actual.format;
data.devformat.channels = data.sample->actual.channels;
data.devformat.samples = 4096; /* I just picked a largish number here. */
data.devformat.callback = audio_callback;
data.devformat.userdata = &data;
if (SDL_OpenAudio(&data.devformat, NULL) < 0)
{
fprintf(stderr, "Couldn't open audio device: %s.\n", SDL_GetError());
Sound_FreeSample(data.sample);
return;
} /* if */
printf("Now playing [%s]...\n", fname);
SDL_PauseAudio(0); /* SDL audio device is "paused" right after opening. */
global_done_flag = 0; /* the audio callback will flip this flag. */
while (!global_done_flag)
SDL_Delay(10); /* just wait for the audio callback to finish. */
/* at this point, we've played the entire audio file. */
SDL_PauseAudio(1); /* so stop the device. */
/*
* Sleep two buffers' worth of audio before closing, in order
* to allow the playback to finish. This isn't always enough;
* perhaps SDL needs a way to explicitly wait for device drain?
* Most apps don't have this issue, since they aren't explicitly
* closing the device as soon as a sound file is done playback.
* As an alternative for this app, you could also change the callback
* to write silence for a call or two before flipping global_done_flag.
*/
SDL_Delay(2 * 1000 * data.devformat.samples / data.devformat.freq);
/* if there was an error, tell the user. */
if (data.sample->flags & SOUND_SAMPLEFLAG_ERROR)
fprintf(stderr, "Error decoding file: %s\n", Sound_GetError());
Sound_FreeSample(data.sample); /* clean up SDL_Sound resources... */
SDL_CloseAudio(); /* will reopen with next file's format. */
} /* playOneSoundFile */